Wiring a 24v ac nest thermostat to a millivolt gas fireplace the nest thermostat installation requires either a wired or a plugin 120 24 volt thermostat transformer.
Can you add a thermostat to a gas fireplace.
The only reason that the nest thermostat wont work on these types of systems is that they do not run enough voltage though their thermostat wires to power the nest.
This voltage powers the nest thermostat as well as charges the thermostats internal battery.
Match your replacement thermostat to the fireplace s original thermostat since incompatible thermostats will cause other operational issues and could prove unsafe.
It took a while to fully charge the battery in the nest so that i could configure the wifi network settings and access the thermostat from the app.
The transformer supplies the nest thermostat with 24v ac across the r h and c connectors.
Thermostats are usually run on 24 volts.
Much like the wireless fireplace thermostat remote the programmable fireplace thermostat remote lets you control your gas fireplace with a thermostat or the included rf remote.
A thermostat remote control or switch turns the flames on and off.
Your fire place is probably 120 volts.
Electric fireplaces already have a pre installed thermostat.
Refer to the fireplace owner s manual to check the voltage of your current thermostat.
Connect thermostat to gas fireplace millivolt.
Connect the nest thermostat to the backplate.
Plug in the ac adapter.
Most gas fireplaces have a switch mounted in the front under the fireplace.
For a more convenient control option you can install a remote switch in a location that is more accessible.
If all is well you should now have a fully functional nest thermostat to operate your gas fireplace.
But this advanced system adds the convenience of a programmable thermostat that lets you program your fireplace to turn on at specific times on specific days of the week.
If you put a 24v thermostat on that 120v line it could.
By all means have a qualified electrician install it.